Internal combustion engine



"Sept. 27, 1932. F. SASS 1,879,528

INTERNAL COMBUSTION ENGINE Filed May 27. 1929 -FL I.

Inventor:

Friedrich .Sa-ss by Hi5 Attorney Patented Sept. 27, 1932 UNITED STATES PAT ENT OFFICE FRIEDRICH SASS, OF BEBLIILCEABLOTTENBIIBG, GERMANY, ASSIGNOB '10 G ELECTRIC COMPANY, A CORPORATION OF NEW You:

INTERNAL comnusrrou Enema Application filed Kay 27, 1929, Serial No.

This invention relates to fuel injectors for internal combustion engines and particularly to fuel injectors for use with double acting engines having what is usually termed solid injection, although it is not necessarily limited thereto. It will be understood that'by solid injection is meant a feed for engines wherein the fuel is forced by pressure through the nozzles into the cylinder without the use of blast air, the nozzles serving to atomize the fuel charge.

In internal combustion engines employing solid injection means it is desirable, in order to obtain a complete mixture of fuel and air in the cylinder necessary for good combustion, that the fuel is fed into the cylinder evenly through a proper number of nozzles. In the closed end of a. double-acting engine this can be accomplished by a centrally arranged fuel valve having a proper number of nozzles. At the other end of the cylinder, however, the piston rod renders such an arrangement impossible. It is especially important on account of the reduced volume and the annular shape of the combustion chamber that a proper distribution of the fuel is obtained. I

According to my invention I provide a common fuel valve for feeding fuel charges through distributing means and a plurality of nozzles into the cylinder.

In the drawing Fig. 1 is a. view partly in elevation and partly in section of one embodiment of my invention applied to a cylinder. Fig. 2 is a sectional view taken on line 2-2 of Fig. 1.

Referring to the drawing 5 indicates the base of an engine, 6, the cylinder thereof closed at its lower end by a cylinder head 7, and 8 a piston rod passing through said head.

According to my invention I provide a v desired number of atomizing nozzles 10 which may be concentrically disposed around the piston rod in spaced relation thereto and project through the cylinder head 7 into the interior of cylinder 6. Pipes 11 connected to the outer ends of nozzles 10 support and communicate with the chamber of an annular fuel manifold 12 which surrounds and is spaced from the piston rod 8. But one dis- 38 8,18 6, and in Germany 1m 21, ms.

tributor is illustrated though severalmay be provided. The fuel fed to the fuel manifold 12 is controlled by a'fuel' valve 13 supported in close proximity to said fuel manifold by the frame 1 or by the distributor itself. The connection pipes 11 and 14 are made as short as possible in order to insure even distribution and even flow of the fuel charges through the pipes, distributor and nozzles. The pipes 11 aremade just long enough to accommodate connection means so that the nozzles and the manifold-may be atomizer tip. By'making the tip openings of the same diameter,equal amounts of fuel will be forced into the cylinder by each nozzle. The number of nozzles employed is dependent on the size of the cylinder. By properly spacing the nozzles]! uniform distribution of the fuel charge in the cylinder is obtained in both the annular shaped space of the piston rod end and the cylindrical shaped closed end of the cylinder.

I have shown my invention applied to the lower end of a single cylinder engine but it may be applied to either the upper or lower end of the cylinder and in single or multiple cylinder engines. a

In accordance with the provisions of the patent statutes, I have shown the rinci 1c of operation of my invention, to et er with the apparatus which I now-consi er to represent the best embodiment thereof, but I desire to have it understood that the apparatus shown is only illustrative and that'the invcntion may be carried out by other means..

' What I claim as new and desire to secure by Letters Patent of the United States is: 1. The combinationwithan engine cylinder having a piston rod passing through one head of said cylinder, of a plurality of atomizing nozzles for solid injectmn fixed in said head,

an annular shaped fuel manifold surround-' ing said piston rod, conduits connectin said nozzles in parallel to said fuel manifol and a fuel valve for controlling the flow of fuel to said fuel manifold.

2. In a fuel distribution system for an engine, em 'loyin solid injection, the combination 0 a cy inder, a piston rod passing through one head of said cylinder, a lurality of atomizing nozzles fixed in said ead, an annular shaped fuel manifold disposed adjacent the nozzles and around said piston rodi conduits connecting said nozzles 1n paralle to said fuel manifold, and a fuel valve mounted in close proximity to said fuel manifold and connected therewith for controlling the flow of fuel to said fuel manifold, whereby all of said nozzles receive fuel simultane ously from the manifold.

In witness whereof, I have hereunto set my hand this 13th day of May, 1929.

, FRIEDRICH SASS. 

